Looks like my latest creation is starting to shape up. I've nailed down a couple of key gameplay features that will differentiate my game from other Tower Defense Games. First of all my cursor that I use to drop down towers also serves double duty as tower enhancer. Towers don't get upgraded traditionally like other tower defense games, but the presence of the player avatar near the towers effectively upgrades them while within the radius of the avatar. Secondly, I have movable waypoints, not all of them are movable but some are. There is a special tower that you can buy that can move the waypoints to the direction you choose. Also it is possible for certain waypoints to randomly move in different directions. This gameplay feature makes the game a bit more dynamic as the flow of the creeps can change at any moment in time.  I posted a video to show the new gameplay features. Enjoy!